I have iChat set up with the Yahoo Messenger protocol. Every time I log in, or suspend/resume my machine, it prompts me to respond to the same 3 Yahoo Messenger buddy requests. I always hit "decline", dismissing the dialogs, but it doesn't seem to stick. Is there a way to fix this?

I also had the same sort of problem, but this time it was on a macbook pro and iMessage that I kept getting a request (From oratoracallyshirley!) to be a "buddy". I went to my pc desktop, logged onto IE and my homepage (which is Yahoo), clicked on "Mail", then opened the "chat" button, clicked on oratoracallyshirley, deleted and blocked it, then went back to my macbook pro and Hey Presto, no "requests for buddies"!